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Finding the Fourth Proportional to 347,785.40, 522,311.70 and 207,817.40

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Solution

The fourth proportional to 347,785.40, 522,311.70 and 207,817.40 is: 312,104.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,785.40 : 522,311.70 = 207,817.40 : x
  2. Step 2: Convert to fraction form
    347,785.40/522,311.70 = 207,817.40/x
  3. Step 3: Cross multiply
    347,785.40x = 522,311.70 × 207,817.40
  4. Step 4: Simplify right side
    347,785.40x = 108,545,459,483.58
  5. Step 5: Solve for x
    x = 108,545,459,483.58/347,785.40
  6. Step 6: Final answer
    x = 312,104.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.